Irinotecan Related Compound C (10 mg) (11-Ethyl-4-hydroxy-4-methyl-3,14-dioxo-3,4,12,14-tetrahydro-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinolin-9-yl (1,4'-bipiperidine)- 1'-carboxylate hydrochloride).